Yeah....if you think of it that way, the axis you are torquing at the moment of release is very close to the point on the rim directly across from your pinch point (since you are impeding your grip/pinch point's forward velocity while the rest of your disc is moving forward.

The only way you can get on-axis torque is some goofy wrist curl and arm motion that has a radius equal to the disc.

OAT is a dumb term.....even dummer that it sounds all scientificky yet manages to get the science all wrong.

Who even coined the term? It is only in the last couple years on DGCR that I have seen it (not like I go a lot of other places and read about throwing mechanics).